Printer&#39;s quoin.



No. 763,637. PATENTED JUNE 28; 1904. .J. RUESGH.

PRINTERS QUOIN.

APPLICATION FILED DBO. "1,1903.

N0 MODEL.

, ym e060: Vabaa/Qy M W @sows/ Patented June 28, 1904.

UNITED STATES PATENT OFFICE.

JACOB RUESCH, OF MILWAUKEE, WISCONSIN.

PRINTERS QUOIN.

SPECIFICATION forming part of Letters Patent No. 763,637, dated June 28, 1904. Application filed December 7, 1903. Serial No} 184,066. (No model.)

To all whom zit may concern.-

Be it known that I, JAooB RUEscH, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Printers Quoins, of which the following is a specification, reference being had to theaccompanying drawings, forming a part thereof.

This invention relates more particularly to means for locking the wedge-sections of printers quoins to each other after they have been tightened in the forms.

The object of theinvention is to prevent the slipping of the furniture and the accidental unlocking of the type in a printers form.

It consists of a locking device applied to a printers quoin, as hereinafter particularly described, and defined in the appended claims.

In the accompanying drawings like letters designate the same parts in both figures.

Figure 1 is a plan view of a printers quoin to which my locking device is applied, parts of the quoin-sections being broken away and shown in section; and Fig. 2 is a perspective view of the quoin, with the key used to tighten the quoin in a form. v

The quoin to which my locking device is adapted and applied is composed of two wedgeshaped sections a and 6, formed on their opposing faces with interworking longitudinal tongues 0 and d and grooves 0 and f for guiding and holding said sections in the proper relation to each other. The sections are also formed on each side of the tongues 0 and d with opposing racks g g for moving them longitudinally one upon the other with a key it and spreading and tightening the quoin in a form according to the usual practice in looking a type-form in a chase with quoins of this class. The tongue d on one section is serrated or formed with a longitudinal series of teeth 2', and the other section is provided with a toothed eccentric j, pivoted on a pin is in a transverse recess in the larger end of said section. The eccentric is provided with a pin or finger piece Z for moving it into and out of engagement with the teeth z' on the opposing section.

In operation when the quoin has been sufficiently spread with the key A: to bind and hold the form in place in the chase the eccentric j is turned and pressed against the toothed tongue d of the opposing section and one section is moved slightly in advance on the other section with the key till the teeth of the cocentric, which is still pressed against the teeth z' on the opposing section, drop into engagement therewith, thus locking the two sec tions together against backward movement. To unlock the form, the key it is inserted in the opposing racks 9, one section is advanced slightly upon the other to release the teeth of the eccentric 7' from the teeth of the tongue at, and the eccentric is then turned, by means i of the pin or finger-piece Z, out of engagement with the toothed tongue (Z. The sections are now free to move backward one upon the other and can be so moved in the usual way with the key it.

When the eccentric is engaged, as shown in Fig. 1, with the toothed tongue CZ on the opposing section, any tendency of the furniture to slip and crowd one section backward upon the other is resisted by said eccentric, which tends under such conditions to spread or separate the sections transversely, as indicated by dotted lines on Fig. 1, and thereby lock the form still tighter. In case the form becomes loosened after it has been locked the key can be inserted in the opposing racks g and one section advanced upon the other till the slack or play in the form is taken up, whereupon the eccentric will be reengaged with the toothed tongue on the opposing section, as above explained.

Modifications in the details of construction may be made without departing from the principle and intended scope of the invention. I claim- 1. A printers quoin composed of two wedgeshaped sections, one of which is provided with a longitudinal series of teeth and the-other with a toothed eccentric adapted to be engaged'with the teeth on the first section and by its rotation, when so engaged,to separate said sections transversely when one of them is moved longitudinally backward with relation to the other, substantially as described.

2. A printers quoin composed of two wed geshaped sections provided with interworking longitudinal guiding tongues and grooves, and with opposing racks for tightening the sections with a key in a form, the tongue on one section being serrated and the other section provided with a toothed eccentric adapted to be engaged with said serrated tongue and by its rotation, when so engaged, to separate said sections transversely when one ofthem is moved longitudinally backward with relation to the other, substantially as described.

3. A printers quoin composed of two wedgeshaped sections, one of which is provided with a longitudinal series of teeth and the other with JACOB RUESCH.

Vitnesses:

CHAS. L. Gross, JAooB G. Rnnson. 

